The spokesman did not provide further details about Hastert's bout with cellulitis, a skin infection that appears as a swollen, red area that feels hot and tender, and that can spread rapidly without treatment.

Hastert, 64, discovered the infection on his lower left leg last week. The Illinois Republican was admitted to Bethesda Naval Hospital on Thursday.

Hastert was treated with intravenous antibiotics through the weekend, and his doctor had ordered him to stay off his feet for several days.